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TE-wave propagation in graded waveguide structures

We investigate TE-wave propagation in a hollow waveguide with a graded dielectric layer, described using a hyperbolic tangent function. General formulae for the electric field components of the TE-waves, applicable to hollow waveguides with arbitrary cross sectional shapes, are presented. We illustrate the exact analytical results for the electric field components in the special case of a rectangu

Association Between Bone Mineral Density and Autoantibodies in Patients With Rheumatoid Arthritis

Objective: Autoantibodies, such as anti–citrullinated protein antibodies (ACPAs), have been described as inducing bone loss in rheumatoid arthritis (RA), which can also be reflected by bone mineral density (BMD). We therefore examined the association between osteoporosis and autoantibodies in two independent RA cohorts. Methods: Dual x-ray absorptiometry (DXA) of the lumbar spine and left hip was

Litteratur och film

Brief account of the relationship between film and literature as art form, commodity, technology and cultural phenomenon.

Optimising health systems to deliver tobacco-dependence treatment

While HCPs lack training in smoking cessation, health systems lack engagement with preventive care; few offer a system-level intervention or a full package of best practice cessation services. There is a need to incorporate innovative and system-level cessation interventions into healthcare and community settings, as part of wider tobacco action plans.This chapter describes successful examples of

Use of a surface emissions trap for enhancing the indoor air quality

Unsatisfactory indoor air quality (IAQ) can result from emissions of volatile organic compounds from the materials of the building. A surface emissions trap (cTrap) can be used to stop such emissions thus preventing them from reaching the indoor air. The present study concerned an apartment where the tenants experienced skin and mucous membrane irritation due to moisture-driven emissions from the

Inhalation and dermal uptake of particle and gas phase phthalates - A human chamber exposure study

We have exposed sixteen test subjects to particle and gas phase phthalates in the controlled chamber exposure study. Deuterium labelled phthalates were used to generate particle D4-DEHP (di(2-ethylhexyl) phthalate) and gas phase D4-DEP (diethyl phthalate) for exposures scenarios allowed studying the dermal only and combined inhalational and dermal uptake. Metabolites were measured in urine samples

The role of organic fraction of aerosol particles in uptake of indoor SVOC investigated with real time aerosol mass spectrometry

We investigate the uptake of the Di(2-ethylhexyl) phthalate (DEHP) by laboratory generated and ambient aerosol particles passing through a 1.2 liter chamber covered with vinyl flooring on its internal surfaces. We found approximately five times more efficient DEHP uptake on a mass basis by organic particles (ambient particles) compared to laboratory generated salt particles. The increased uptake i

Family Genetic Risk Scores and the Genetic Architecture of Major Affective and Psychotic Disorders in a Swedish National Sample

Importance: Family and genetic approaches have traditionally been used to evaluate our diagnostic concepts. Using a novel method, the family genetic risk score (FGRS), can we validate the genetic architecture of major affective and psychotic disorders in a national Swedish sample? Objective: To determine whether FGRSs, calculated for the entire Swedish population, can elucidate the genetic relatio

Less improvement following meniscal repair compared with arthroscopic partial meniscectomy : a prospective cohort study of patient-reported outcomes in 150 young adults at 1- and 5-years’ follow-up

Background and purpose — Meniscal repair may reduce long-term risk of knee osteoarthritis compared with arthroscopic partial meniscectomy (APM), whereas patient-reported outcomes may be poorer at short term than for APM. We compared patient-reported outcomes in young adults undergoing meniscal repair or APM up to ∼5 years after surgery. Patients and methods — We included 150 patients aged 18–40 ye

Detecting purging of inbreeding depression by a slow rate of inbreeding for various traits : the impact of environmental and experimental conditions

Inbreeding depression (ID) has since long been recognized as a significant factor in evolutionary biology. It is mainly the consequence of (partially) recessive deleterious mutations maintained by mutation-selection balance in large random mating populations. When population size is reduced, recessive alleles are increasingly found in homozygous condition due to drift and inbreeding and become mor

Robust Decision Analysis under Severe Uncertainty and Ambiguous Tradeoffs : An Invasive Species Case Study

Bayesian decision analysis is a useful method for risk management decisions, but is limited in its ability to consider severe uncertainty in knowledge, and value ambiguity in management objectives. We study the use of robust Bayesian decision analysis to handle problems where one or both of these issues arise. The robust Bayesian approach models severe uncertainty through bounds on probability dis

Coupled dynamics of iron, manganese, and phosphorus in brackish coastal sediments populated by cable bacteria

Coastal waters worldwide suffer from increased eutrophication and seasonal bottom water hypoxia. Here, we assess the dynamics of iron (Fe), manganese (Mn), and phosphorus (P) in sediments of the eutrophic, brackish Gulf of Finland populated by cable bacteria. At sites where bottom waters are oxic in spring, surface enrichments of Fe and Mn oxides and high abundances of cable bacteria were observed

Fracture Energy Measurement of Prismatic Plane and Σ2 Boundary in Cemented Carbide

The grain boundary network of WC in WC-Co is important, as cracks often travel intergranularly. This motivates the present work, where we experimentally measure the fracture energy of Σ2 twist grain boundaries between WC crystals using a double cantilever beam opened with a wedge under displacement control in a WC-10wt%Co sample. The fracture energy of this boundary type was compared with cleaving

Effect of aging on cerebral tissue oxygenation in relation to reflex syncope

Background: There is an increased susceptibility to syncope with aging attributed to age-related physiological impairments. Cerebral oxime-try non-invasively measures cerebral tissue oxygenation (SctO2) and has been shown to be valuable in syncope evaluation. SctO2 has beenfound to decrease with aging but it is unknown whether the decrease in SctO2 is related to increased susceptibility to syncope